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Feasibility of individual dosimetry using RT-PHITS for patients with SPECT/CT imaging after $$^{177}$$Lu-DOTATATE peptide receptor radionuclide therapy

$$^{177}$$Lu-DOTATATEペプチド受容体核医学療法後のSPECT/CT画像とRT-PHITSを用いた個別線量測定の実現可能性

三輪 建太*; 柿野 諒*; 佐藤 達彦   ; 古田 琢哉   ; 宮司 典明*; 山尾 天翔*; 山下 康輔*; 寺内 康輔*

Miwa, Kenta*; Kakino, Ryo*; Sato, Tatsuhiko; Furuta, Takuya; Miyaji, Noriaki*; Yamao, Tensho*; Yamashita, Kosuke*; Terauchi, Takeshi*

RT-PHITSは、PHITSを放射線治療分野に応用するための統合パッケージで、患者のCT/SPECT画像をPHITSの入力形式に変換してその線量評価を行うことができる。本稿では、$$^{177}$$Lu-DOTATATEペプチド受容体核医学療法後のSPECT/CT画像とRT-PHITSを用いた個別線量測定の実現可能性について検討する。

Radiotherapy package based on Particle and Heavy Ion Transport code System (RT-PHITS) enables to calculate the 3-dimensional dose distribution inside patients using their individual SPECT/CT images coupled with the Monte Carlo radiation transport simulation. The objective of this study is to evaluate the feasibility of individual dosimetry based on RT-PHITS for patients after $$^{177}$$Lu-DOTATATE peptide receptor radionuclide therapy.

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